From owner-freebsd-questions@FreeBSD.ORG Tue Dec 23 23:39:16 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F09FF16A4CE for ; Tue, 23 Dec 2003 23:39:16 -0800 (PST) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id F1E2E43D3F for ; Tue, 23 Dec 2003 23:39:15 -0800 (PST) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.10/8.12.10) id hBO7dEto053555; Wed, 24 Dec 2003 01:39:14 -0600 (CST) (envelope-from dan) Date: Wed, 24 Dec 2003 01:39:14 -0600 From: Dan Nelson To: Gerard Samuel Message-ID: <20031224073914.GD2890@dan.emsphone.com> References: <200312240034.29237.fbsd-questions@trini0.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200312240034.29237.fbsd-questions@trini0.org> X-OS: FreeBSD 5.2-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.5.1i cc: questions@freebsd.org Subject: Re: Running dual CPUs X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Dec 2003 07:39:17 -0000 In the last episode (Dec 24), Gerard Samuel said: > I acquired a pair of Slot 1 CPUs that is supposedly a matched pair. > I've heard, that they must be of the same stepping, and Im not sure > of what Im looking for. CPU specs are at -> > http://processorfinder.intel.com/scripts/ > details.asp?sSpec=SL3XL&ProcFam=25&PkgType=ALL&SysBusSpd=ALL&CorSpd=5775 > Just trying to be careful before I fry the thing, so any pointers are > welcome. Thanks Most of the time, stepping doesn't matter. You can look at Intel's processor errata pages to see exactly what got fixed in each stepping, and determine whether the bugs would interfere with SMP or not. I've run dual-CPU systems with different steppings with no problems. I haven't heard of anyone damaging their CPUs or motherboard with mismatched CPUs. -- Dan Nelson dnelson@allantgroup.com